Worried&#128543;. Spot of blood In mucus.

So yesterday when i wiped myself after tinkling, I saw some mucus and spot of blood in it. My period ended last Sunday and I had sex with my husband on Wednesday. I'm a little confused and a little worried. Do you think it's the conception stage? It was like this with my first born. I had my third little one last year in August. I don't know what to do😟?